Fish pond spring fertilization attention
2021-03-30 12:02:13
1. Organic fertilizers must be fully fermented. The temperature of fish ponds in spring is low, and the oxygen content in water is relatively abundant. Rational application of organic fertilizers is not only low in cost, but also can achieve good breeding results. Fish ponds, such as manure, livestock and poultry manure, must be fully fermented. Fermentation and decomposing fertilizers with organic matter applied to fish ponds can not only reduce the consumption of oxygen in water, but also can be quickly absorbed and utilized by phytoplankton, and can also kill pathogens in organic fertilizers.
2. The fertilization should be less applied Shi Qin Shi so-called "less applied", that is, each time the application of organic fertilizer tens of kilograms per acre to 100 kilograms; the so-called "equilibrium", that is, water and dung uniform sprinkled throughout the pond, so that fish pond water It is yellow-brown or oil-green, the surface of the water is oil-free, and the transparency is maintained at 20-30 cm. The so-called "diligent practice" means that as the fish feeds, whenever the pond's water content falls and the transparency is greater than 30 cm, fertilize immediately.
3. Due to the “fish†system, it should be determined that the amount of fertilization is not the fish pond where the main fish is reared or bred. Since the feed is fed, the amount of fertilizer in spring needs to be reduced accordingly, so that the transparency can be maintained at 30-40 cm; as the temperature rises, the pond water fertility will increase. getting bigger. Intensive breeding of fish ponds with high yields of squid and intensive culture of grass carp, although they have raised some squid and carp, they should not be fertilized in spring.
4. Fertilization time is good for sunny mornings. Listen to (watch) the weather forecast. Do not fertilize on cloudy or rainy days. Phytoplankton grows through photosynthesis and fertilizes on sunny mornings for two to three days in a row. It can promote microbial growth and reproduction as quickly as possible, minimize the pollution of organic fertilizers on water quality, and ensure the benign circulation of fish and pond material.
5. Changing the water regularly to keep the water fresh If the accumulation of metabolic wastes of organic matter and various types of organisms in fish ponds is excessive, the oxygen content in water decreases, and the plankton composition is poor, the growth of farmed fish will be affected. Therefore, it is necessary to change the new water regularly so as not to overload the fish ponds and keep the water quality “fat, live, tender and coolâ€.
2. The fertilization should be less applied Shi Qin Shi so-called "less applied", that is, each time the application of organic fertilizer tens of kilograms per acre to 100 kilograms; the so-called "equilibrium", that is, water and dung uniform sprinkled throughout the pond, so that fish pond water It is yellow-brown or oil-green, the surface of the water is oil-free, and the transparency is maintained at 20-30 cm. The so-called "diligent practice" means that as the fish feeds, whenever the pond's water content falls and the transparency is greater than 30 cm, fertilize immediately.
3. Due to the “fish†system, it should be determined that the amount of fertilization is not the fish pond where the main fish is reared or bred. Since the feed is fed, the amount of fertilizer in spring needs to be reduced accordingly, so that the transparency can be maintained at 30-40 cm; as the temperature rises, the pond water fertility will increase. getting bigger. Intensive breeding of fish ponds with high yields of squid and intensive culture of grass carp, although they have raised some squid and carp, they should not be fertilized in spring.
4. Fertilization time is good for sunny mornings. Listen to (watch) the weather forecast. Do not fertilize on cloudy or rainy days. Phytoplankton grows through photosynthesis and fertilizes on sunny mornings for two to three days in a row. It can promote microbial growth and reproduction as quickly as possible, minimize the pollution of organic fertilizers on water quality, and ensure the benign circulation of fish and pond material.
5. Changing the water regularly to keep the water fresh If the accumulation of metabolic wastes of organic matter and various types of organisms in fish ponds is excessive, the oxygen content in water decreases, and the plankton composition is poor, the growth of farmed fish will be affected. Therefore, it is necessary to change the new water regularly so as not to overload the fish ponds and keep the water quality “fat, live, tender and coolâ€.
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